The one story I heard was that the guy came into the doorm and found his girlfriend with the RA and shot them both, and then game back later and shot all the other people. But the guy in the press conference said he did not believe that the girl in the first shooting was the girlfriend...almost the only info to come from the press conference.

I think it's happening because there are crazy people who do crazy things. Didn't that whiteman guy have a brain tumor and hear voices?